Compact 810 kA linear transformer driver cavity

High Current Electronics Institute, Tomsk, Russia(Received 27 January 2011; published 14 April 2011; publisher error corrected 19 April 2011)We are performingexperiments with a 92-kV,810-kA, 74.6-GWlinear transformer driver (LTD) cavity.This cavity generates a 100 ns power pulse from DC-charged capacitors in a single step. Our experi-ments start with an existing 100-kV, 490-kA LTD cavity and are making a number of improvements to itthat are aimed at increasing the cavity’s peak output power and better understanding its operation. We aremaking improvements to the gas switches, the capacitors, and the magnetic toroids as well as heavilyinstrumentingthecavity.Theseexperimentshaveincreasedthecavity’soutputcurrentintoamatchedloadby 65% without increasing its volume.